Wrench.



T. A. CASEY.

WRENCH.

APPLICATION FILED NOV. 1, 1907.

901,151. I. Patented on.13,19o8.

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THOMAS A. CASEY, OF PITTSBURG, PENNSYLVANIA.

WRENCH.

Specification of Letters Patent,

Patented Oct. 13, 1908.

Application led Novembel` 1, 1907. Serial No. 400,192.

To @Il whom it mayconcern:

13e 1t known .that I, THOMAS A. CASEY, a cltlzen of vthe United States,residing at Pittsburg, county of Allegheny, Pennsyl-- vania, haveinvented certain new and useful Improvements in Wrenches, of which thefollowing is a specification, reference being had therein to theaccompanying drawings.

This invention relates to wrenches, and its primary obj ect is toprovide a wrench capale of being quickly adjusted and firmly secured inadjusted position.

A further object of the invention is, to provide a wrench having amovable jaw adapted to be adjusted either by moving the jaw bodily byhand, or by the revolution of a loosely supported screw extendingthrough said jaw. y

The construction of the improvement will be fully described hereinafterin connection with the accompanying drawing, which forms a part of thisspecification and its novel features will be set forth in the appendedclaim.

In the drawing: Figure 1 is a side elevation of a wrench embodying theinvention, Fig. 2 is a transverse section of the same, and Fig. 3 is alongitudinal section of the movable jaw, with parts in elevation.

The reference numeral 1 designates a lhandle from the upper end of whichproject two parallel rods 2 and 8 preferably formed integral with thehandle, and serving as the shank of the wrench.

To the upper ends of the rods 2 and 3 is secured a fixed aw 4, formed onits under surface with a bearing 5 for the up er end of a screw 6, thelower end 7 of wiich is supported in a Socket 8 formed in the upper endof the handle 1. A knurled disk 9 is secured upon the Screw 6 adjacentto its lower end by means of which the screw may be readily turned.

Supported u on the rods 2 and 3 is a Slide 10 formed wit a jaw 11constituting the movable jaw of the wrench. This slide is formed withparallel circular openings 12 for the passage of the rods 2 and, and acentral opening for the passage of the screw 6.

In assembling the parts of the device, the slide 10 is slipped upon therods 2 and 3 and screw 6, and the fixed jaw 4 is then secured upon therods in any suitable manner.

The Slide 10 is formed on each side with a slot 13 and with a pair ofperforated ears 14, between which is pivotally secured by a pin L15 aperforated lug 16 projecting from a clamping jaw 17. As shown in Figs. 2and 3 .these jaws 17 are o positely disposed and their inner faces are'ormed with semiecircular recesses 18 provided with screw-threads to`engage the threads of the screw 6. Each of the clamping jaws 17 isprovided with an upwardly projecting arm 19 extending into a verticalrecess 20 communicating with the slots 13. Between the arms 19 and thewalls 21 of the slideare interposed curved springs 22, the lower ends ofwhich are riveted or otherwise secured to the walls 21, while their uper free ends bear against the arms 19 and hoifl the threaded jaws 17 inengagement with the screw 6.

The utility and operation of the improvement will be readily understood.The slide carrying the movable jaw 11 is normally stationary through theengagement of its springvpressed jaws withthe screw 6. To adjust themovable jaw the upper ends of the arms 19 are compressed to release thethreaded jaws 17 from the Screw, after which the slide 10 and jaw 11 maybe adjusted with relation to the fixed jaw 4. When pressure is removedfrom the arms 19, the springs 22 force the clamping jaws into engagementwith the screw, thus holding the slide in its adjusted position.

Asa supplemental adjusting means for the movable jaw, I have providedthe knurled thumb-piece or disk 9, and it will be apparent that byturning the screw 6 by means of this disk the slide may be adjusted ineither direction through the engagement of the screw with the threads ofthe clamping jaws 17 The invention includes all such modifications andvariations in the details of construction as may be resorted to Withoutdeparting from the terms and scope of the claim.

Having now described my invention what I claim as new, is

A wrench comprising a handle, vertically extending rods formed integralwith the upper end of the handle and arranged in parallelism withrespect to each other, a fixed jaw carried by the upper ends of saidrods, a rotatable threaded bar interposed between said rods andjournaled at its ends in the jaw and handle, a slide having an elongatedlongitudinal opening, said opening having rounded end walls, said slidemounted upon the rods and bar and said rods positioned in closeproximity to the rounded end Walls of said opening, said slide furtherprovided with a rectangular opening in each side connnunieating withsaid longitudinal opening and said slide further having in the outerface of each side a vertically extending recess ter- Ininating at itslower end in a rectangular opening, the upper end of said slideconstituting a jaw and said slide further provided at each side of arecess at the lower end thereof with an apertured lug, rectangularclamping jaws mounted in said rectangular openings and extending in saidlongitudinal opening and having the inner face thereof provided with aseinicircular groove with the wall thereof threaded to engage said har,a shank having its lower end formed integral with each of the jawsapproximately centrally thereof' at one side, said shanks having theinajor portions thereof extending 1n dll'- ferent planes from that inwhich theI jaws ex- 12o l the Shanks to the said lugs and s )rines hav 2h 7 h l ing their lower ends lived to the inner walls ol said recessesand their upper ends engaging the upper ends of the sha-nhs.

In testimony whereof l. allx my signature in the presence ol twowitnesses.

'll [OMAS A. CASEY, lNitnesses MAX ll. SnoLovi'rz,

i. A. RENZnnIAUsnN.

